Related Experiment Video
Updated: Mar 12, 2026

Quantification of Fungal Colonization, Sporogenesis, and Production of Mycotoxins Using Kernel Bioassays
Published on: April 23, 2012
Occurrence and fumonisin B2 producing potential of Aspergillus section Nigri in Brazil nuts
Larissa S Ferranti1, Benedito Correa2, Maria Helena P Fungaro3
1Instituto de Tecnologia de Alimentos - ITAL, C.P. 139, Campinas, SP, CEP 13070-178, Brazil. issaferranti@uol.com.br.
Abstract:
Bertholletia excelsa is the tree that produces Brazil nuts which have vast economic importance in the Amazon region and as an export commodity. The aim of this study was to assess the presence of Aspergillus section Nigri in Brazil nut samples at different stages of its production chain and to verify the toxigenic potential for fumonisin B2 (FB2) production of these isolates along with the presence of this mycotoxin in Brazil nut samples. The fungal infection ranged from 0 to 80% at the different stages of the harvest and processing chain and the water activity of the nuts from 0.273 to 0.994. A total of 1052 A. section Nigri strains were isolated from Brazil nuts and 200 strains were tested for their ability to produce FB2: 41 strains (20.5%) were FB2 producers with concentrations ranging from 0.09 to 37.25 mg/kg; 2 strains (1%) showed traces of FB2, less than the detection limit (0.08 mg/kg); and 157 (78.5%) were not FB2 producers. Although several samples showed high contamination by A. section Nigri, no sample was contaminated by FB2.
More Related Videos
09:21Inhibition of Aspergillus flavus Growth and Aflatoxin Production in Transgenic Maize Expressing the α-amylase Inhibitor from Lablab purpureus L.
Published on: February 15, 2019
09:44RNAi-mediated Control of Aflatoxins in Peanut: Method to Analyze Mycotoxin Production and Transgene Expression in the Peanut/Aspergillus Pathosystem
Published on: December 21, 2015
Related Concept Videos
Fungal Phylum Ascomycota
The Roles of Bacteria and Fungi in Plant Nutrition
Fungal Group Zygomycota
2° Amines to N-Nitrosamines: Reaction with NaNO2